/* -*- mode: C -*-  */
/* 
   IGraph library.
   Copyright (C) 2006-2012  Gabor Csardi <csardi.gabor@gmail.com>
   334 Harvard st, Cambridge MA, 02139 USA
   
   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2 of the License, or
   (at your option) any later version.
   
   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.
   
   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc.,  51 Franklin Street, Fifth Floor, Boston, MA 
   02110-1301 USA

*/

#include <igraph.h>
#include <igraph_stack.h>

int main() {

  igraph_stack_t st;
  int i;

  /* igraph_stack_init, igraph_stack_destroy */
  igraph_stack_init(&st, 0);
  igraph_stack_destroy(&st);
  igraph_stack_init(&st, 10);
  igraph_stack_destroy(&st);

  /* igraph_stack_reserve */
  igraph_stack_init(&st, 0);
  igraph_stack_reserve(&st, 10);
  igraph_stack_reserve(&st, 5);

  /* igraph_stack_empty */
  if (!igraph_stack_empty(&st)) {
    return 1;
  }
  igraph_stack_push(&st, 1);
  if (igraph_stack_empty(&st)) {
    return 2;
  }

  /* igraph_stack_size */
  if (igraph_stack_size(&st) != 1) {
    return 3;
  }
  for (i=0; i<10; i++) {
    igraph_stack_push(&st, i);
  }
  if (igraph_stack_size(&st) != 11) {
    return 4;
  }

  /* igraph_stack_clear */
  igraph_stack_clear(&st);
  if (!igraph_stack_empty(&st)) {
    return 5;
  }
  igraph_stack_push(&st, 100);
  if (igraph_stack_pop(&st) != 100) {
    return 6;
  }
  igraph_stack_clear(&st);
  igraph_stack_clear(&st);

  /* igraph_stack_push, igraph_stack_pop */
  for (i=0; i<100; i++) {
    igraph_stack_push(&st, 100-i);
  }
  for (i=0; i<100; i++) {
    if (igraph_stack_pop(&st) != i+1) {
      return 7;
    }
  }
  if (!igraph_stack_empty(&st)) {
    return 8;
  }
  
  igraph_stack_destroy(&st);

  if (IGRAPH_FINALLY_STACK_SIZE() != 0) return 9;

  return 0;
}
